CAN YOU HEAR THE LIGHTS?

If you’ve ever (67) ………….. the Northern Lights dancing in the night sky, you’ll no doubt have been amazed by their beauty. These strange natural light displays are (68) ………….. by atmospheric energy, and a recent study has indicated that not only are they pretty to look at, but they may also produce certain distinct sounds. Researchers studying the phenomenon believe they have managed to (69) ………….. the sounds.

The Northern Lights appear most powerfully in Arctic (70) ………….., where there have been tales told about the noises which (71) ………….. them for many years. People describe hearing hissing and crackling sounds, like the noises you hear when your radio is (72) ………….. for a signal.

The researchers recorded (73) ………….. but definite sounds during periods of intense atmospheric activity. They think that what might be creating the sounds are geomagnetic storms, which (74) ………….. large changes in the atmosphere. On the (75) ………….., however, the scientific community remains puzzled.

CLIMBING UP THE STARS!

The highest mountain in the world is Mount Everest, 8848m high. Many …………………………. (50. ADVENTURE) climbers have risked their lives climbing it. More than 140 people have died, some in their attempt to reach the peak, and others who were …………………………. (51. FORTUNE) in their return trip from the top. Being …………………………. (52. CONFIDE) is not enough for this trip. You should be fit, skilled and you must take the proper …………………………. (53. SUPPLY) with you. This could mean the difference between life and death. Nevertheless, such an …………………………. (54. OPERATE) is full of danger.

Rarely does a climber return from Mount Everest without needing …………………………. (55. MEDICINE) attention. Some come down, with fingers or toes so …………………………. (56. FREEZE) that they clink like glass.

But what is it that makes people risk their lives or take the …………………………. (57. PUNISH) Mt Everest imposes on them? Why is it that even the death of fellow climbers doesn’t …………………………. (58. COURAGE) them?

…………………………. (59. UNDERSTAND) climbers’ reasons may be difficult. Perhaps it’s the thrill of standing on the peak of the highest mountain, the place on earth that’s the closest to the stars.

HOW WELL DO YOU SLEEP?

Do you need complete silence to sleep well at night? While some people can sleep through a great deal of noise, others are woken up by the (9) …………… sound. It appears that as we sleep, our brains produce rapid pulses, or waves, called ‘sleep spindles’. Research has (10) …………… that our ability to sleep soundly may (11) …………… on the number of sleep spindles we produce.

Scientists conducted a three-day study on 12 volunteers, all of whom (12) …………… themselves as good sleepers. On the first night, the scientists (13) …………… the volunteers sleep in silence. On the following nights, however, they were subjected to various noises, ranging from the sound of a (14) …………… tap to jet engine roars.

Measurements of brain activity showed that the participants who reacted least to the noise were the ones who produced more sleep spindles, (15) …………… on the quiet night. It is hoped that this discovery will (16) …………… to new ways to help people who have difficulty sleeping.

II. Correct the mistakes. 

‘I love chocolate biscuits.’ ‘So I do.’             …………………………………

What have you been doing?’ asked she.            …………………………………

Hardly had Melissa gone to bed than the telephone rang.    …………………………………

Not only he is lazy, but also stubborn.            …………………………………

He is a mechanic, as his father.                …………………………………

Seldom she goes to the theatre.                …………………………………

Only after had he closed the windows he left the house.    …………………………………

Dear Choir Members,

   As you know, the choir we met in France last year (24) ............. here in May.

   On 25th, 26th and 28th May, they (25) ............. here in Cheltenham. (They (26) ............. another concert on the 27th, but we couldn’t find a suitable venue, unfortunately.) I’m glad to say that the tickets are going fast and I think we (27) ............. them all by the end of this week, so if you want some, hurry!

   On the 29th, they (28) ............. sightseeing in Stratford. I (29) ............. the coaches for this trip next week, so please phone me this week if you want a place. The cost is £15 per person and the coaches (30) ............. the bus station at 8.30 a.m. I (31) ............. here on Thursday between eight and ten – I (32) ............. in London - but you can leave a message on the answerphone.

   I don’t know yet about the party on the 30th. I (33) ............. organizing it last week, but I didn’t have time. I’llgive you the details as soon as I can.

24. A. are coming B. will have come C. were going to come

25. A. will perform B. are performing C. we going to perform

26. A. will give B. are going to give C. were going to give

27. A. sell B. are selling C. will have sold

28. A. go B. will go C. are going

29. A. will book B. am going to book C. will have booked

30. A. leave B. are leaving C. are going to leave

31. A. won’t be B. won’t have been C. am not being

32. A. am going to rehearse B. will rehearse C. will be rehearsing

33. A. will start B. was going to start C. will have started

*Viết đoạn văn diễn dịch nêu cảm nhận của em về nhân vật chị Dậu trong "Tức nước vỡ bờ" khoảng 12 câu, trong đoạn văn có sử dụng 1 câu bị động, 1 cụm từ có tác dụng để nối (gạch chân trong đoạn văn).

*Câu chủ đề: Chị Dậu trong đoạn trích "Tức nước vỡ bờ" của Ngô Tất Tố có tình yêu chồng tha thiết và tiềm tàng sức mạnh phản kháng.

Cho hình bình hành ABCD. Qua đỉnh A kẻ đường thẳng song song với đường chéo BD cắt các tia CB và CD lần lượt tại E và F. Chứng minh: a) Tứ giác EBDA và ABDF là hình bình hành. b) B, D, A lần lượt là trung điểm của EC, CF, EF. c) Ba đường ED, BF, AC đồng quy. d) Hai tam giác ECF và ABD có cùng trọng tâm.

IV. Complete the sentences. Use comparative + and + comparative. 20. We’re going to need ...................................................................... energy. (much) 21. The world’s getting ...................................................................... (hot) 22. Pollution’s getting ...................................................................... (bad) 23. Some countries are getting ...................................................................... rain each year. (little) 24. There are ...................................................................... forests. (few) 25. The ice in the Arctic is melting ...................................................................... (quickly) V. Complete the sentences. Use “the + comparative + the + comparative” ~ When I’m busy, I’m happy. In fact, the busier I am, ...the happier I am... 26. If you cook it for a long time, it tastes nice. In fact, the longer you cook it, ............................................. 27. Good clothes are often expensive. Usually, the better they are, ............................................. 28. We drive more slowly on narrow roads. In fact, the narrower the road, ............................................. 29. You’ll make more mistakes if you’re tired. In fact, the more tired you are, ............................................. 30. You feel energetic when you’re fit. Generally, the fitter you are, .............................................

Cho hình thang ABCD (AB//CD) biết AB=AD=6cm, AC=8cm và AD vuông góc với AC. a) Tính diện tích hình thang ABCD. b) Gọi M là trung điểm của BC, AM cắt CD tại I. Tính diện tích tam giác MCI.